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We hope this article offers some comfort when you're feeling unwell or anxious.
"Doctor, when I stand up after sitting, everything goes black and I feel like I'm going to faint."
"When I stand on the subway for a long time, I break into cold sweats and my heart pounds like it's going to explode."
When you visit a hospital with these symptoms, you typically get a blood test for anemia or a brain MRI. But the results almost always come back as "normal" or "it's just nerves."
You're living through hell every day, yet they say nothing's wrong—how frustrating must that be? Today, Dalimchae takes a detailed look at 'cardiovascular autonomic dysfunction'—not simple dizziness, but a breakdown in your body's automatic regulation system.
1. A Body That Can't Fight Gravity
Unlike four-legged animals, humans stand upright on two feet. The moment you get up from lying down, gravity pulls blood rapidly toward your legs.
In a healthy person, the 'autonomic nervous system' acts as a sensor that responds instantly—within 0.1 seconds, it tightens leg blood vessels and adjusts heart rate to prevent blood shortage to the brain.
But for those whose sensor is broken, the body can't keep up with gravitational changes. Blood pools in the legs and can't return upward, leaving the brain short of blood supply. The body declares a state of emergency.
- Orthostatic hypotension — Blood vessels can't constrict, causing blood pressure to drop suddenly, leading to fainting or dizziness
- Postural Orthostatic Tachycardia Syndrome (POTS) — The heart races frantically to compensate for insufficient brain blood flow (palpitations, anxiety, shortness of breath)
2. "It's Not Hypochondria"—Why Tests Come Back Normal
Many ask, "All my hospital tests are normal—am I just being oversensitive?" The straightforward answer: you're not oversensitive—the tests are looking in the wrong place.
Mainstream medical tests (MRI, CT, endoscopy) check whether organ 'structure' (shape) is damaged. But autonomic dysfunction means the structure is fine while the 'function' (operation) is broken. It's like a light bulb that works perfectly, but the switch wiring is faulty so the light won't turn on.
Normal test results don't mean the pain isn't real. This is actually a serious condition where whole-body functions decline simultaneously—fatigue, brain fog, sleep disorders, and digestive problems.
3. These Groups Should Be Especially Careful
Autonomic problems occur more frequently in certain situations:
- Menopausal women — Estrogen helps maintain blood vessel elasticity; after menopause, hormone decline causes a sharp drop in vascular regulation
- Teenagers (gaming/internet) — Those who stay up gaming or lack exercise. Weak leg muscles can't pump blood upward effectively
- Post-COVID or viral infection — Immune responses can temporarily damage the nervous system, causing lingering aftereffects
4. Lifestyle Prescriptions More Important Than Medicine (★Important)
Autonomic dysfunction can't be cured by medication alone. You need to change your body's environment. Here are habits you can start practicing today.
① 500cc of Water Right After Waking
A glass of lukewarm water first thing in the morning stimulates the stomach and naturally raises blood pressure throughout the body. It's the most powerful switch for waking up the autonomic nervous system.
② Add a Little More Salt (for low blood pressure)
"Eat less salt for health" applies to people with high blood pressure. Those with orthostatic hypotension need adequate salt intake. Salt helps retain water in the body, increasing blood volume. (Approximately 10g per day recommended)
③ Sleep With Your Upper Body Slightly Elevated
Rather than lying completely flat, raise your upper body 10-15 degrees. This reduces nighttime bathroom trips and prevents morning dizziness upon standing.
④ Cross Your Legs and Clench Your Fists
When suddenly dizzy or standing for a long time, cross your legs in an X shape and clench your fists tightly. This engages peripheral muscles, temporarily raising blood pressure to prevent fainting. Compression stockings also help greatly.
5. Dalimchae's Treatment: Restoring the Heart's Strength
Lifestyle management can alleviate symptoms, but repairing the broken sensor requires treatment. In Korean medicine, this falls under simdam-heogeop (weakened heart and gallbladder causing fearfulness) or giheol-yangheo (deficiency of both energy and blood).
Dalimchae doesn't just suppress symptoms—we build the strength to overcome gravity.
Strengthening the Heart's Pump (Gangsim)
We boost heart energy so that even when standing up, blood can be powerfully pumped up to the brain.
Replenishing Blood Volume (Bohyeol)
We fill depleted vessels with fluids (moisture and nutrition), creating a foundation for blood circulation.
Ascending Clarity, Descending Warmth (Suseunghwagang)
We cool the overheated head and warm the cold hands, feet, and abdomen, restoring autonomic balance.
In Closing
"My tests are normal, so why do I feel so terrible?" Stop suffering in silence. An invisible illness doesn't mean there's no cure.
Your lost balance—Dalimchae will help restore it.
Where life blooms—for herbal medicine, trust Dalimchae.
This article was compiled by Dalimchae's medical team based on frequently asked questions in the consultation room.
Medical review | Dalimchae Korean Medicine Clinic, Songdo Branch, Dr. Oh Hyun-min